Research

To understand brain network functions, our research program is comprised of two directions: 1) Identifying brain network interactions and 2) Testing causal roles by modulating brain network interactions. For the first aim, we study functional neuroimaging data with network analysis methods to understand brain network functions (Hein, Morishima et al. Science, 2016; Nakataki et al., Neuropsychopharmacology, 2016, Ishida et al., Frontiers in Psychiatry, 2021). For the second aim, we develop a new methodological framework to modulate brain network interactions with non-invasive brain stimulation methods (Fehér, et al., Frontiers Human Neuroscience 2017, Brain connectivity 2021). We also address the psychopathology of psychiatric disorders by combining sophisticated cognitive tasks and brain stimulation (Koshikawa et al., Psychiatry and Clinical Neuroscience, 2022)

The methods we are using are as follows.

  • Functional MRI
  • fMRI-based functional/effective connectivity analysis
  • EEG
  • EEG-based connectivity analysis
  • TMS/tDCS/tACS
  • Concurrent TMS-EEG/tDCS-EEG/tACS-TMS-EEG

We also offer support to conceptualize and optimize cognitive tasks and MRI sequence of fMRI projects, and analysis of neuroimaging data, as well as concurrent and independent use of non-invasive brain stimulation methods (TMS, tDCS and tACS).